1928, Great Britain Airmail card Great Britain to Switzerland via Basel bearing partial of the 6 stp booklet pane - 2 stp plus 2 adverts. KGV NB15/a(28) 'Holiday Trips £40 “Tourist 3rd Cabin Only” [in 3 lines] / Atlantic Transport Line and GB 1929 SG434 1/d Postal Union Congress . transit and Luftpost cancelation on front.
